Vertical CSS3 Shadow Menu
This vertical CSS Menu uses CSS3's ability to define multiple/ inset shadows (so the shadow grows inwards) on an element to create menu items with a bevelled left edge and a growing inner glow when the mouse rolls over them.

CSS3 animated vertical slanted menu
This is a vertical list menu that uses CSS3 animation to gradually expand the selected menu item horizontally so to highlight it. It also employs the CSS border trick to create a cross browser slanted left edge. The final result is a sleek vertical list menu that uses nothing but pure HTML markup!

Nested Side Bar Menu
This is a simple yet professional looking multi level side menu. Markup wise it's just a regular nested UL list, turned into a drop down menu using a very small JavaScript code.

Sexy Panels Vertical Menu
Sexy Panels is a vertical list menu with a curvy right edge. Its layout not only adapts to changes to its dimensions, but is also easily customizable in terms of its color- through CSS alone.

Arrow Green Vertical Menu
Arrow Green Menu is a vertical list based menu that uses a single background image to create 3 distinct states, by shifting the image vertically to reveal a different style.

Urban Grey Side Menu
This is nonchalant greyish side menu that blends right in with most designs. The menu headers are H3 tags with a non repeating background image as its bullet, while the menu links are all list based.

Arrow Bullet List Menu
This CSS list menu features category headers with a two toned background, UL elements that have their default margins and padding removed, and finally, LI elements with custom bullet images. The result is something simple but elegant, and resembling something you might have seen on this site already!